Open AccessEffect of Various Factors on the Sorption of Endosulphan on Two Indian Soils
Author(s) -
J. P. Rawat,
S. M. Umar Iraqi,
R. P. Singh
Publication year - 1997
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1177/026361749701500902
Subject(s) - sorption , chemistry , adsorption , standard molar entropy , soil water , organic matter , freundlich equation , enthalpy , environmental chemistry , gibbs free energy , thermodynamics , standard enthalpy of formation , soil science , organic chemistry , geology , physics
The effects of exchangeable cations (H + and Na + ), organic matter, non-ionic and anionic surfactants, and temperature on the sorption of endosulphan on two different types of soils were studied. Adsorption studies were performed using the batch technique and adsorption isotherms for all effects/treatments were in close agreement with the Freundlich equation. The adsorptive capacity of endosulphan towards organic matter and clay content in the natural forms of both soils was also evaluated by calculating the corresponding values of the specific adsorption capacity for organic matter, K om , and the clay content, K c . Various thermodynamic parameters such as the thermodynamic equilibrium constant (K 0 ), standard free energy changes (ΔG 0 ), standard enthalpy changes (ΔH 0 ) and standard entropy changes (ΔS 0 ) have been calculated in order to predict the nature of the isotherms.